5.0-stable review patch. If anyone has any objections, please let me know.
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From: Aditya Pakki pakki001@umn.edu
commit 32f47179833b63de72427131169809065db6745e upstream.
of_match_device on failure to find a matching device can return a NULL pointer. The patch checks for such a scenrio and passes the error upstream.
Signed-off-by: Aditya Pakki pakki001@umn.edu Cc: stable stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/tty/serial/mvebu-uart.c | 3 +++ 1 file changed, 3 insertions(+)
--- a/drivers/tty/serial/mvebu-uart.c +++ b/drivers/tty/serial/mvebu-uart.c @@ -810,6 +810,9 @@ static int mvebu_uart_probe(struct platf return -EINVAL; }
+ if (!match) + return -ENODEV; + /* Assume that all UART ports have a DT alias or none has */ id = of_alias_get_id(pdev->dev.of_node, "serial"); if (!pdev->dev.of_node || id < 0)